Southington



(No Model.)

T. W; SOUTHINGTON PROPELLER.

No. 595,740. Patented Dec 21, 189?.

NITE

STATES THOMAS WASHINGTON SOUTHINGTON, OF LOOUST VALLEY, NEIV YORK, AS-SIGNOR OF ONE-HALF TO JAMES TILLEY MITCHELL, OF SAME PLACE.

PROPELLER.

SPECIFICATION forming part of Letters Patent No. 595,740, dated December21, 1897.

Application filed March 12, 1897.

T0 all-whom it may concern:

Be it known that I, THOMAS WASHINGTON SOUTHINGTON, a citizen of theUnited States, residing at Locust Valley, in the county of Queens andState of New York, have invented certain new and useful Improvements inPropellers, of which the following is a full and complete specification,such as will enable those skilled in the art to which it appertains tomake and use the same.

This invention relates to propellers; and the object thereof is toprovide an improved device of this class for use in connection withsteam vessels, whereby greater propelling power is secured, togetherwith less vibration, and a minimum amount of back action. This object Iaccomplish by means of propellerblades of peculiar and novelconstruction, which constitute the chief feature of my invention; andthe inventionis fully disclosed in the following specification, of whichthe accompanying drawings form apart, in which the separate parts of myimprovement are designated by the same numerals of reference in each ofthe views, and in which Figure 1 is an end View of my improvedpropeller; Fig. 2, a side view thereof, and Fig. 3 a transverse sectionof one of the blades 1 on the line 33 of Fig. 2.

In the practice of my invention I provide a propeller which comprisesthe usual tubular hub 5, through which the propeller-shaft passes, andsaid tubular hub is provided with a plurality of blades 6, which arepreferably three in number, and which are of the form and constructionhereinafter described.

The blades 6 are secured to the hub 5 in any desired manner or may beformed integrally therewith, and said blades constitute plates which areset diagonally to the hub 5 and which project radially therefrom. Theseblades are curved longitudinally, as shown, each of said blades beingprovided centrally and longitudinally thereof with a forwardlydirectedcurve 7, the sides of the blades being curved longitudinally, so thatthey are segmental in cross-section, the fronts thereof being convex, asshown at 8, and the opposite edges thereof being each directedforwardly, and the opposite sides of the blades are correspondinglyformed, being provided Serial No. 627,097. (No model.)

centrally and longitudinally with a groove 9, and the sides of theblades, adjacent to said groove, being convex in cross-section,as shownat 10. The end of each of the blades is split for about one-quarter ofits length, and the separate parts or wings 11 thus formed are bent inopposite directions, that part or wing connected with the forward edgeof the blade being bent forwardly and that portion connected with therear portion of the blade be ing bent backwardly, and the inclination ofthese parts or wings 11 with reference to the hub 5 of the propeller issuch that if said parts or wings and said hub were projected they wouldform an angle of about forty-five degrees. It will also be seen that oneof the blades is formed on or connected with the hub 5 adjacent to therear end thereof, the next succeeding blade is formed on or connectedwith said hub near the center thereof, while the next blade is connectedwith'or formed on said hub near the end opposite to that adjacent towhich the first blade is formed or secured and the propeller thusoperates as a screw. It will be apparent that this arrangement of theblades may be modified, as described, the chief feature of thisinvention consisting of the form of the blades, as hereinbeforedescribed.

By means of this construction I secure a great increase of power, whileat the same time the Vibration caused by the propeller is largelyreduced, and the back action which accompanies the operation ofpropellers as usually constructed is entirely avoided.

The word forward as used in the foregoing description refers to thedirection in which the propeller turns in order to propel the vessel,while the .word backward is used to designate, the opposite direction,or that in which the propeller turns when backing a vessel.

Having fully described my invention, I

claim as new and desire to secure by Letters Patent- 1. A propellerprovided with blades which opposite directions, substantially as shown.

and described.

2. A propeller provided with blades which project radially from the hubthereof, and which are set obliquely to said hub, said blades being bentcentrally and longitudinally to form a forwardly-directed portion, ateach side of which they are segmental in form in cross-section, theedges thereof being directed forwardly, substantially as shown anddescribed.

3. A propeller the blades of which project radially from the hubthereof, and are curved in cross-section so as to formaforwardly-directed central portion, the sides of each blade adjacent tosaid central portion being segmental in form, in cross-section With theedges thereof directed forwardly, and the outer end of each blade beingalso split for a portion of its length, and the separate parts thusformed being turned in opposite directions, substantially as shown anddescribed. 4. A propeller, comprising a hub 5 and blades 6, each ofwhich is set diagonally of said hub, and at different pointslongitudinally of the same; each blade being provided with a curvedportion 7 and curved portions 8, and each being provided With Wings 11which are curved in opposite directions, substantially as and for thepurpose described.

In testiinony that I claim the foregoing as my invention I have signedmy name, in presence of the subscribing Witnesses, this 10th day ofMarch, 1897.

THOMAS WASHINGTON SOUTHINGTON. \Vitnesses:

O. GERST, T. M. CARR.

